Fluid-operated vise



IIII

-J. DITSON.

FLUID OPEBATED VISE. APPLICATION FILED IuLY 22,1919.

Patented Aug. 10, 1920.

2 SHEETS-SHEET l.

J. DITSON.

FLUID OPERATED VISE.

APPLICATION FILED JULY 22,19I9. 1,34195330.

Patente Aug. 1I), 192

2 SHEETS-SHEET 2.

v ESSI'.

A TTIMIEY UNITED vSTATES PATENT OFFICE.

JEssE Dirson, or LrrTLE'roN, coronare, AssreNoE, BrivrEsNE ASSIGNMENTS,To INGEEsoLL-EAND COMPANY, A ccErcEATroN or NEW JERSEY.

FLUID-OPERATED VISIE.

Specification of Letters Patent. Patented Aug, 10, 1920,

Application filed July 22, 1919. Serial N0. 312,570.

To all whom 'it may concern:

Be it known that I, JESSE Dirson, a citizen of the United States,residing at Littleton, in the county of Arapahoe and State of Colorado,have invented a certain new and useful Improvement in Fluid-OperatedVises, of which the following is a specification.

This invention relates to a pinning out device for drill steels and inparticular to a fluid operateddevice for securely grasping the drillsteel and holding it in alinement with a reciprocatory pin while thesteel is being pinned out.

The objects of the present invention are to improve the form of pinningout machine described and claimed in my Patent No. 1,306,106 grantedJune 10, 1919.

A further object of the invention is to improve the device forxclosingand tightening the jaw members of the vise about the drill steel,furthermore to improve the method of operating the vise closing means byfluid pressure.

lilith these and other objects in view my invention consists in thefeatures of construction andy operation set forth in the followingspecification.

In the drawings annexed hereto and forming a part hereof:

Figure 1 shows a plan view of the device, parts being brokenV away 'tomore clearly show the construction;

Fig. 2, the side elevation of the complete tool, the cover plate beingbroken away to more clearly show the operating means for closing the jawmembers of the vise;

Fig. 3 is a front elevation of the complete device; f

Fig. i, a perspective view of one of the vise jaws and operating device;

Fig. 5, a view of one of the jaw members, and

Fig. 6, a view showing the pin retaining means.

Referring more particularly to the drawings, 1 refers to a suitablepedestal or support upon which the complete device may be convenientlymounted and secured by any well known means, or if desired, thismechanism may be conveniently mounted at one side of a drilrlsharpener.The body member of the pinning out device shown at 2 is provided with.two cylinders atits rear end, one

being shownat 3,the other at 4:, and at the for-ward end of the bodymember 2 is a cross member 5 in which are located the jaw members 6 and7 of the device to be more olefinitely referred to, hereinafter.

Within cylinder 3 operates a piston 8 to which a piston rod 9 isattached, extending from its forward face. Piston rod 9 eX- tendsthrough the forward end of cylinder 3, through a suitable packing box orgland '10 and, at its forward end has attached thereto a pin 11. Pin 11may be secured at the forward end of piston rod 9 in any suitablemanner, the method shown in Fig. 6 being simple and may be readilyoperated to remove or replace pins as they become worn or damaged.Briefly this method of attaching comprises a clamping nut 9ZL threadedinto the forward end of the piston rod 49 and through which the pin 11extends.

The' piston 8 may be operated forwardly and backwardlyV in its cylinder3 by any suitable valve mechanism which it is thought unnecessary tofully describe. A suitable valve for operating this piston as well aspiston 13, is shown at Fig. 2 at 12 and comprises a double headedbalanced valve, movement of which conveys fluid under pressure to theforward or back ends ofthe cylinder 3 as well as cylinder L1, and whichmay be readily controlled. by a suitable handle 25 attached to one endof the valve stemV 26.

Within cylinder A piston 1S operates to which is attached a piston rod14. Preferably the lines of movement of piston rod 9 and piston rod 111are in alinement respectively with piston 8 and piston 13. This piston18 is moved forwardly and back as above vdescribed by the same valve 12used to operate piston 8.

Referring now more vparticularly to the vise and the jaw members, thetwo jaw members 6 and 7 are oppositely disposed and equally distant fromthe axis on which the pin 11 operates and are slidably mounted withinthe cross member 5. A cross shaft 15 having left and right screwthreaded por,- tions 16 and 17 is threaded to jaw members 6 and 7 nearthe lower surface of these jaw members and thus by rotating the crossshaft 15 the vise members 6 and 7 will be brought together more closelyor separated depending upon the direction of rotation of Shaft 15.

Jaw member 6 comprises one rigid part mounted to swing on `part 33 asat35 and is provided with an arcuate steel gripping face of long radiusformed eccentric to the pivot 35 and thus by swinging in either,v

' direction -brings the eccentric arcuate steel gripping surface of 34closer to the oppos-` ing straight steel gripping surface of jaw 6 afterrotation of shaft 15 has ceased and the pin 11 is being forced into orout of theA drill. steel.

At one end of the shaft 15 is provided a small sprocket' gear 18 madefast in any suitable way to the crossv shaft 15. Another small sprocketwheel 19 is mounted rearward of and in alinement with sprocket wheel 18at any convenient part of the body member 2 and a chain 2O is passedaround both sprocket wheels 18 and 19. The forward end of piston rod 14is attached in any suitable manner to one of the links-'of chain 2() asshown at 21 so that movement of piston rod 14 will operate the chain 2Oin either direction and thus rotatethe cross shaft 1'5. The sprocketwheels 18 and 19 are spaced sufficiently widely apart that the completemovement of pistonv rod 14C may take place without the linked connection21 coming in contact with either of the sprocket wheels 18 and 19. f

. Preferably the connection between the Y chain 2O and piston rod 14takes the form of a small cross head which has a part 22 sliding in orupon a suitable `guideway 23 in order to keep the forward end of pistonrod 14 in proper alinement.

For convenience in blowing the scale from the hole in the drill steel asmall blower is mounted in the pinning out machine as shown at 30. Thisis in communicationvwith the source of compressed air supply through apipe 31. Preferably the blower is provided with an air pressed nozzlevalve member 32 so that a drill steel maybe forced vagainst the nozzlemember 32 which serves to open the valve admitting a blast of air underpressure to thoroughly cleanse the hole in the drill steel.-

From the above description of the conto open the central hole to thedesiredY amount but if desired the pin 11 may be forced into the drillsteel several times if found necessary. i A Movement of the handle 25 inthe reverse direction returns the piston 8 and pin l1 to their rearmostposition thus removing the pin from the drill steel and further reversemovement of the handle 25 servesto bring the valve l2 back to itsinitial position which forces the piston 13 and rod 14 rearward thusopening the jaw members of the vise.

It is to be understood that the present showing and description discloseonly one specic embodiment of my present invention, and that otherformsV andmodications are included within the spirit and scope thereof,as expressed in the appended claims.

`What I claim is:

1.7In a pinning out machine for drill steels, a pair of movable vise jawmembers,

Va left rand right screw threaded member threaded member.

2. In a pinning out machine for drill steels, a pair'of visejaw members,a screw threaded member for moving said jaw members toward and away fromeach other, a piston, a piston rod, a gear mounted on said threadedmember and operatively connected with said piston rodwhereby movement ofsaid piston will rotate said threaded member and force the jaw memberstowardror away from each other; 3. In a pinning out..machine for drillsteels, va pair'of vise jaw'members adapted to grip a drill steel, athreaded member rotation of which is adapted to move said jaw memberstoward or away from each other, means for rotating said threaded membercomprising a fluid operated piston, a piston rod, a chain'attached tosaid piston rod and moved by said piston and a gear mounted on saidthreaded member and engaged by said chain.-

4. In a vise'constructiona pair of oppositely disposedV relativelymovable vise j aw members, a shaft having threaded poi'- tions engagingsaid jaw members, a gear on said shaft, a chain engaging said gear andfluid operated means ffor operating said gear and chain to move the jawmembers toward and away from each other.

5. In avise construction, a pair of oppositely disposed jaw memberssiidably mounted and adapted to be forced toward 0r away from eachother, one of said jaw members having a curved gripping face and pivotedto swing slightly to more securely grip an article between said jaws.

6. In a vise construction, a pair of oppositely disposed jaw membersslidably mounted and adapted to be forced toward or away from eachother, one of said jaw members having a straight gripping face, theopposite jaw member having a curved gripping face and adapted to swingabout a pivot to more firmly grip an article between said jaws.

7. In a vise construction, a pair of oppositely disposed jaw membersslidabiy mounted and adapted to be forced toward or away from eachother, one 0f said jaw members having a straight gripping face7 theopposite jaw member having an eccentrica'lly pivoted gripping member tomore firmly grip an article between said jaws.

In testimony whereof I have hereunto set my hand.

JESSE DITSON.

